函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\futex.c Create Date:2022-07-27 11:54:22
Last Modify:2020-03-17 15:28:32 Copyright©Brick
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函数名称：queue_unlock

函数原型：static inline void queue_unlock(struct futex_hash_bucket *hb)__releases(&hb->lock)

返回类型：void

参数：

类型参数名称
struct futex_hash_bucket *hb
2326  自旋锁解锁
2327  Reflects a waiter being removed from the waitqueue by wakeup* paths.
调用者
名称描述
futex_wait_setupex_wait_setup() - Prepare to wait on a futex*@uaddr: the futex userspace address*@val: the expected value*@flags: futex flags (FLAGS_SHARED, etc.)*@q: the associated futex_q*@hb: storage for hash_bucket pointer to be returned to caller
futex_lock_piUserspace tried a 0 -> TID atomic transition of the futex value* and failed. The kernel side here does the whole locking operation:* if there are waiters then it will block as a consequence of relying* on rt-mutexes, it does PI, etc
futex_wait_requeue_piex_wait_requeue_pi() - Wait on uaddr and take uaddr2*@uaddr: the futex we initially wait on (non-pi)*@flags: futex flags (FLAGS_SHARED, FLAGS_CLOCKRT, etc